Lubricating means for double disk grain drills



ug. 31, 1937. .Q PALUCK 2,091,486

LUBRICATING MEANS FOR DOUBLE DISK GRAIN DRILLS Filed June 8, 1936 //////////TV/// 7 "l1 Patented Aug. 3l, 1937 u NITED STATES PATENT OFFICE LUBRICATING MEANS FOR DOUBLE DISK y GRAIN DRILLS Casmir Paluck, Belfield, N. Dak.

A Applicatidn June 8, 1936, SBI'QINO. 84,088

s Claims. (o1. 30s-1a) A an independent supply of lubricant each disk This invention relates to furrow openers for graindrills. More specifically it'relates to improvements in lubricating means for double disk furrow openers. y

5 In the use of double disk furrow openers in the past, lubrication has been provided by various means directly to the two bearing surfaces. As the disks operate under very adverse conditions with pulverized soil continually dropping over the l outside of the bearings, great difficulty has been encountered in obtaining satisfactory lifeA for any type of bearing. With the advent ofthe high pressure lubricating means conventionally spoken of as hydraulic. double disk furrow openers have 15 been lubricated by a conduit extending from a reservoir to a point above the disks. Oil or suit able grease under pressure was supplied through a tting to the lubricant conduit. `Lubricant from the reservoir was delivered through suitable pas'- 20 sages formed in the bearing supports to the bearings of the individual disks. This method of lu-A brication has proved inadequate, and it has been found. impossible toI satisfactorily lubricate double disk furrow openers.. The principal reason 25 for failure is'that bearing clearances and Wear alwaysdiffer somewhat in the twobearings `of the-furrow opener. When lubricant is supplied under pressure lto the reservoir, it is forced into l one bearing without being supplied to the other 3o bearing, Even when the supply lof lubricant is continued until it is forced through the bearing to the outside of thel disk, it does not follow that the other bearing receiveslubricant.v A's a matter of actual practice it has been found that one 35 bearing receives less lubricant until it runs dryy and quickly destroys the bearing surface. vThe effect of temperature on the oil viscosity also complicates the problem. There are always different conditions in the separate bearings which 4o make the resistance to hydraulic pressure in one bearing greater than in the other. lThere-is also another important point to be considered. When i one bearing wears sufficiently to allow escape of lubricant, the supply is also drained from the 45 other bearing with the result that, when this condition arises, both of the bearings are damaged due to insufficient lubrication.

'Ihe principal object of the invention is to overcome the difficulties above pointed out by 5o providing a separate reservoir for each bearing of a double disk furrow opener and by supplying lubricant under pressure independently to each of the reservoirs.

A more specific object is the construction of a 55 disk boot and its associated parts to incorporate bearing.

These objects and others relating to the construction of the parts will be apparent from the detailed description to follow. v

In the drawing,-

Figure 1 is a perspective viewof a drill boot incorporating the lubricantws'upply means of theV invention; and, i j

Figure 2 is a substantially vertical section taken through a drill boot, as shown in Figure 1, with the furrow opening.dis ks mounted in position on the boot.-

Figure 1 illustrates a drill boot I Il of convenl tional construction usedwith double disk furrow openers. The drill boot is supported by an extension I I Aon a drag-bar, which has not been illustrated. Said drag-basis pivotally 'connected to the drill frame to allow movement in a verti`r cal direction of the drillboot. A hopper I2 is incorporated on the drill boot `forthe delivery of A deflector I3 extending downwardly di-v It is to be understood that the threads iny one of the bosses is left hand with'respect to the other to prevent unscrewing ofthe securing members AI'l when the disks are moving'in the forward direction. The securing members I'I are provided with conical heads I8 which flt into conical bores formed in bearing members I9. In order to .pre` vent rotation of the supporting members II with respect tothe bearing members I9, notches are formed in the conical heads I8. Lugs 2% formed on the bearing members Ifengage said notches when the heads are seated in tightened position. The bearing members I9 rotatably fit into hubs" 2| riveted to the disks I5. Bearing surfaces are provided thereby on each face of the bearing members I9 and around the periphery thereof.

In order to form a seal against the entrance of dirt to the bearing and the escape of lubricant therefrom, a sealing member 22, L-shaped in cross section, surrounds the outside of each boss I6 and is held in position abutting the adjacent disk l5, by spring 23.

A chamber 24 is cored out of the bottom of the bracket I 4. Said chamber is divided by a plate 25 into lubricant reservoirs 26 at each side of the plate. Said reservoirs are supplied with lubricant by conduits 21 threaded into the reservoirs and extending upwardly through lateral flanges 28 formed as integral parts of the drill boot I0. Fittings 29 are secured to the upper' ends of the conduits 21 for the supply of lubricant thereto by high pressure hydraulic devices, as vconventionally and the outer ends of the bearing members I9.

used on fittings of this type. y

The supporting members I1 are provided with lubricant passages 30 therethrough to form means of communication between the oil reservoirs 26 Lubricant passesy from said outer ends along the outer faces of the bearing members I9, over the peripheral faces thereof, and along` the inner faces thereof. By supplying lubricantindependently under pressure to each of the disk bearings the bearing `surfaces may be thoroughly lubricated, and the dirty grease may be extruded from the bearing surfaces outside of the disk. This feature makes itpossible to adequately supply each bearing with lubricant with Va certainty impossible when the lubricant supply to the disks comes from a common chamber.

' The operation of a furrow opener as above described is well known and does not need addi- 0 tional explanation in this application.y The problem of supplying lubricant to the disk bearings has been above discussed. It is clear from vthe above description of the parts how theindependent supply of lubricant overcomes the problems which have been encountered,`and improves to a great extent the operation of a double diskV furrow opener. Applicant has solved a problem which has long confronted the users of double disk furrow openers. dependently to the individual bearings there is assurance of suilicient lubricant being properly distributed yto the Vbearing surfaces. 'I'here is l also assurance that the wear and leakage of oner bearing does not adversely affect the'bearing of the cooperating disk. 'I'his reduces the cost of maintenance and repair. Other advantages `are apparent from the description and explanation given in the above specifications.

It is to be understood that applicant has shown and described his improved lubricating device only in connection with a particular type of doubledisk furrow opener. It is to be further un# 'derstood that the improved lubrication system may be used with anyvdouble disk furrow opener,

and applicant limits his claim to invention onlyy by By supplying lubricant in standard for each disk, and independent lubricant conduits extending from. the top of the standard beyond the periphery of the disks to each of said reservoirs. 2. In a grain drill having a disk supporting standard, the combination of disk supporting means oppositely extending from the bottom of said standard, a pair of furrow opening disks independently rotatably mounted on said means at an angle with respect to each other, independent oil reservoirs formed in the lower end ofthe standard foreach disk, and independent lubricant conduits communicating with each' reservoir.

3. In a grain drill having a disk supportingr standard, the combination of disk supportingk means oppositely extending from thebottom of said standard, a pair of furrow opening disks independently rotatably mounted onA said means at anangle with respect to each other, a chamber formed in the lower end of the standard,l a wall dividing said chamber into twofindependent oil reservoirs for each disk, and a lubricant sup-l ply conduit communicating with each reservoir.l

4. In a. grain drill, va disk boot having oppositely extending bosses at the lower end and, in combination therewith, bearing members carried byV said bosses, a pair of furrowopening'disksjindependently rotatably mounted on said bearing members at an angle with respect to each other,

cant passages and said supporting standard being formed with lubricant reservoirs in commu# nication with said lubricant passages, and independent lubricant passages in vcommunication with lsaid reservoirs.

` 30 rsaid bearing members being formed with lubrin l.is

5.'In a grain drill, the combination with a central disk supporting standard having oppositely extending bosses at the lower end of bearing members carried by said bosses, ampair of disks independently rotatably mounted on said bearing members, said bearing members beingk formed with lubricant passages, said supporting standard being formed with independent lubricant reservoirs in 'communication with said lubricant passages, and independent lubricant passages in communication with said reservoirs and extending upwardly above the periphery of the disks.

6. A furrow opener for graindrills comprising a drill boot having a laterallyextended upper portion and a disk supportingstandard extend# ing downwardly therefrom, disk supporting means oppositely extending from the bottom o1'` said standard, a pair of 'furrow opening disks Y independently rotatably mounted on said means atan angle 'with respect tofeach other, inde-g pendent oil reservoirs formed in the supporting means for each disk, and independent lubricant conduits extending through the laterally extend--` ed upper yportion of the b oot above the periphery of the disks downwardly to each of said res-v ervoirs. ;l

' CASMIR PALUCK. 

